Re: wipers will not go down!!
Either wiper switch is messed up or it's the motor assembly. As the motor assembly contains logic components and a couple of relays I would put my guess on the motor assembly. When the wipers are switched off the the run line to motor assembly goes to 0 volts and the 'park' relay is picked in the motor assembly, this relay runs the wiper motor at low speed to pull the wipers into to hidden or park position. When they get to the park position a switch in the motor signals the motor assembly and power is removed. Your symptoms look like either the on/off voltage signal from switch to the assembly logic is still on (greater than 1 volt, bad switch) or the motor assembly logic circuit is running the wipers in error. To check the switch you have to find connector C215 on the steering column, pull it, if wipers park problem is the switch is putting a run signal voltage to the motor. if they still don't park check pin E on connector side to wipers, if at 1 volt or greater you have a short putting a run voltage level on that wire and it will prevent wipers from stopping, or could be motor logic assembly is bad holding the run signal active. If voltage is 0 volts on pin E to wipers then motor assembly needs replacement as it's running w/o a + run voltage signal to the assembly logic. C215 is a straight 11 pack at base of steering column, pin E is a dark green wire pins D thru M are used N & P look open in the book. .
Fred in post #3 offered to email you SM info, have you taken him up on that.. page 8A-91-0 SM book 2 of 2 has the electrical schematic
I'm Bob.. 1994 Z28, A4, Stall, CAI, Cam, RR's, 342 rear, LT's , CatBack, Tuned
Last edited by bobdec; 06-12-2013 at 01:35 PM.